The Research Connection

The Caltrans Division of Research
and Innovation is hosting monthly webinars
on various topics. The presentations are designed to
bring researchers and practitioners together to exchange
information and transfer knowledge.

A RESEARCH CONNECTION EVENT

Roundabouts: Research & Development
Findings & Products

Sponsored by:Caltrans & Federal Highway Administration

Presented By:Lee Rodegerdts of Kittelson & Associates
& Key Research Project Team Members

Roundabouts are a common form of intersection control used throughout the world and increasingly in the United States. The information contained in NCHRP Report 672 Roundabouts: An Informal Guide is based on the 2000 Guide as well as established and emerging U.S. practices and recent research.

As roundabouts are more widely adopted, it is becoming clear that in many instances roundabouts could be the preferred intersection treatment and can improve safety, mobility, and reduce environmental impacts. Since there is no absolutely optimum design, this webinar and the guide are not intended as an inflexible set of rules but rather attempts to explain some principles of selection, good design and indicate potential trade-offs that one may face in a variety of situations.

For individuals with sensory disability, this document is available in Braille, large print, on audio cassette, or computer disk.
To obtain a copy in one of these alternate formats, please contact the DRISI Webmaster.